Price Elasticity Of Supply (PES)
Overview
When the price of a good rises, every producer would like to supply more, but some can react in minutes while others need months or even years. Price elasticity of supply puts a number on that responsiveness. It is the difference between a software firm that can serve a million extra downloads overnight and an apple grower who must wait a whole season for the next crop.
In this lesson you will calculate PES with the standard formula, read off what the value means from perfectly inelastic to perfectly elastic, draw the supply curves for each case, and explain the real influences, spare capacity, stocks, time and factor mobility, that make supply elastic or inelastic. By the end you will both compute and interpret PES with confidence.
Objectives
- calculation of PES using the formula
- interpretation of the significance of the PES value: perfectly inelastic, inelastic, unitary, elastic, perfectly elastic
- drawing and interpretation of supply curve diagrams to show different PES
- main influences on whether supply is elastic or inelastic
Lesson Note
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Lesson Evaluation
Congratulations on completing the lesson on Price Elasticity Of Supply (PES). Now that youve explored the key concepts and ideas, its time to put your knowledge to the test. This section offers a variety of practice questions designed to reinforce your understanding and help you gauge your grasp of the material.
You will encounter a mix of question types, including multiple-choice questions, short answer questions, and essay questions. Each question is thoughtfully crafted to assess different aspects of your knowledge and critical thinking skills.
Use this evaluation section as an opportunity to reinforce your understanding of the topic and to identify any areas where you may need additional study. Don't be discouraged by any challenges you encounter; instead, view them as opportunities for growth and improvement.
- Price rises 10% and quantity supplied rises 5%. The PES is: A. 2.0 (elastic) B. 0.5 (inelastic) C. 1.0 (unitary) D. 0 (perfectly inelastic) Answer: B
- A vertical supply curve shows supply that is: A. perfectly elastic B. unitary C. perfectly inelastic D. elastic Answer: C
- Which factor tends to make supply more price elastic? A. perishable goods that cannot be stored B. plenty of spare productive capacity C. a very short time period D. inputs that cannot be switched to the good Answer: B
- A straight-line supply curve drawn from the origin has a PES of: A. 0 B. less than 1 C. exactly 1 D. infinity Answer: C
- Price rises 6% and quantity supplied rises 18%. Supply is: A. inelastic, PES 0.33 B. unitary, PES 1 C. elastic, PES 3 D. perfectly inelastic Answer: C
Available on the Green Bridge App
Download the Green Bridge CBT app on your phone or computer to access full lesson notes, practice questions, and more.
Available on the Green Bridge App
Download the Green Bridge CBT app on your phone or computer to access full lesson notes, practice questions, and more.
Recommended Books
Practice Mock Questions
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